---
product_id: 259452091
title: "MANNOL 9201 Catalytic System Cleaner | Exhaust system cleaner | Cleans oxygen sensors | Improves fuel efficiency | Catalytic converter cleaner | Imported From Germany(500ml)"
brand: "mannol"
price: "$24.11"
currency: USD
in_stock: true
reviews_count: 8
category: "Mannol"
url: https://www.desertcart.us/products/259452091-mannol-9201-catalytic-system-cleaner-exhaust-system-cleaner-cleans-oxygen
store_origin: US
region: United States of America
---

# Removes stubborn carbon deposits Quick 30-45 min infusion process Restores catalytic converter efficiency MANNOL 9201 Catalytic System Cleaner | Exhaust system cleaner | Cleans oxygen sensors | Improves fuel efficiency | Catalytic converter cleaner | Imported From Germany(500ml)

**Brand:** mannol
**Price:** $24.11
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock your engine’s hidden power with every clean!

## Quick Answers

- **What is this?** MANNOL 9201 Catalytic System Cleaner | Exhaust system cleaner | Cleans oxygen sensors | Improves fuel efficiency | Catalytic converter cleaner | Imported From Germany(500ml) by mannol
- **How much does it cost?** $24.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/259452091-mannol-9201-catalytic-system-cleaner-exhaust-system-cleaner-cleans-oxygen)

## Best For

- mannol enthusiasts

## Why This Product

- Trusted mannol brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sensor Revival:** Cleans oxygen sensor electrodes to boost sensor accuracy and reduce error codes
- • **Deep Carbon Detox:** Eliminates carbon buildup on valves, piston rings & exhaust for peak engine health
- • **Prolonged Engine Life:** Prevents future deposits, extending catalytic converter and combustion system lifespan
- • **Fuel Efficiency Booster:** Optimizes combustion and exhaust purification to lower fuel consumption
- • **Professional-Grade Application:** Easy infusion method designed for precise, effective cleaning in under an hour

## Overview

MANNOL 9201 Catalytic System Cleaner is a professional-grade fuel system additive that removes carbon deposits from valves, piston rings, catalytic converter cells, and oxygen sensors. This cleaner restores optimal exhaust purification, improves sensor performance, reduces fuel consumption, and extends the lifespan of your vehicle’s catalytic system. Designed for a quick 30-45 minute infusion, it’s a must-have for maintaining peak engine efficiency and avoiding costly repairs.

## Description

The Catalytic System Cleaner removes typical contamination and deposits in the combustion system: it cleans valves, piston rings, the exhaust system and the catalytic converter by eliminating carbon residues and scale, which ensures reliable operation and improved performance. It restores the optimal exhaust gases purification and decreases fuel consumption. All of this prolongs the service life of the catalytic converter and the combustion system. Connect the infusion device with the can. Insert the infusion needle into the engine rubber air intake vacuum tube and hang the can upside down to start the infusion. Let the engine run under stationary conditions at 1,500 rpm approximately for 30-45 minutes. Use this product outdoors. In case the exhaust manifold burns red due to high temperature of the catalytic converter, immediately stop the cleaning process.

Review: Use with cautions - Amazing grate and good product for doing it peruse
Review: Not sure if anything happened - Used to have o2 sensor error frequently, after using it so far no errors, if one appears again will add comment.

## Features

- Cleans valves, piston rings, and catalytic converter cells, as well as the exhaust system, from carbon deposits, tar, and other residues;
- Removes carbon deposits from combustion chamber walls and piston ring grooves, preventing future buildup;
- Cleans oxygen sensor electrodes (lambda probe), improving sensor performance;

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0744LYJ84 |
| Best Sellers Rank | #9,543 in Automotive ( See Top 100 in Automotive ) #35 in Automotive Fuel System Cleaners |
| Brand | MANNOL |
| Customer Reviews | 4.2 4.2 out of 5 stars (116) |
| Date First Available | 28 December 2017 |
| Item Weight | 500 g |
| Item model number | 9201 |
| Manufacturer | MANNOL |
| Manufacturer Part Number | 9201 |
| Product Dimensions | 11 x 6 x 19 cm; 500 g |

## Images

![MANNOL 9201 Catalytic System Cleaner | Exhaust system cleaner | Cleans oxygen sensors | Improves fuel efficiency | Catalytic converter cleaner | Imported From Germany(500ml) - Image 1](https://m.media-amazon.com/images/I/61epk0S5iiL.jpg)

## Questions & Answers

**Q: How often should I use it on my car?**
A: It depends how old ur car or catalytic converter is.. i do it on every major maintenance..or 20000kms it keeps ur catalytic clean

**Q: How often should I use it on my car?**
A: Hi,
It depends on the condition of the car injectors and catalytic. In my opinion, I think every 20k KM if the injectors are much dirty and between 30-40k KM if you clean them on regular basis.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Use with cautions
*by M***R on 13 October 2025*

Amazing grate and good product for doing it peruse

### ⭐⭐⭐⭐⭐ Not sure if anything happened
*by S***O on 23 September 2023*

Used to have o2 sensor error frequently, after using it so far no errors, if one appears again will add comment.

### ⭐⭐⭐ Munir
*by M***R on 7 August 2023*

Didn't solved the issue

## Frequently Bought Together

- MANNOL 9201 CATALYTIC SYSTEM CLEANER - Professional O.E.M. Edition
- MANNOL 9990 Oil Additive Motor Doctor Oil Additive | Designed To Increase Oil Pressure And To decrease Oil Consumption In Engines - 350 ml
- HTE MANNOL 9981 Petrol Injector Cleaner – Gasoline Fuel Injection System Cleaner Additive 1x 300ml – Germany

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-13*